package cn.itcast.filter;

import javax.servlet.*;
import javax.servlet.annotation.WebFilter;
import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

//@WebFilter(filterName = "Filter22",urlPatterns = "/*")
public class Filter22 implements Filter {
    public void destroy() {
    }

    public void doFilter(ServletRequest req, ServletResponse resp, FilterChain chain) throws ServletException, IOException {
        HttpServletRequest request = (HttpServletRequest) req;
        HttpServletResponse response = (HttpServletResponse) resp;
        Cookie[] cookies = ((HttpServletRequest) req).getCookies();
        if (cookies!=null){
            for (int i = 0; i < cookies.length; i++) {
                System.out.println(cookies[i].getName());
            }
        }
        else{
            System.out.println("cookies是空");
        }
        chain.doFilter(req, resp);
    }

    public void init(FilterConfig config) throws ServletException {

    }

}
